JPH0674591B2 - Anchor support beam construction method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anchor support beam construction method for stabilizing an inclined surface by using an anchor plate.

[0002]

2. Description of the Related Art As one of the construction methods for stabilizing a slope, an anchor body is driven into the ground and the head of the anchor body is
There is a method of anchoring on a concrete support beam constructed on a slope and using this support beam to support the slope. Conventionally, when constructing a support beam as described above, first, concrete block-shaped anchor plates are scattered on the slope and anchored with anchor bodies, then the anchor plates are frozen with reinforcing bars, and the surroundings of this reinforcing bar are fixed. A solid support material such as concrete was cast to construct a continuous support beam.

[0003]

The above method of constructing a support beam using anchor plates has the advantage that the work of setting the solidified material on site is only between the anchor plates, but on the slope. The work of connecting and arranging the anchor plates in is still laborious,
There was room for improvement.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and does not require a connecting and arranging work for connecting anchor plates, thereby improving the anchoring efficiency. The purpose is to provide a construction method for beams. That is, the present invention is a concrete block-shaped anchor plate, in which the reinforcing bar is exposed from the side surface and the through hole for reinforcing bar installation is penetrated to another side surface, and the anchor plate is placed on the slope. After fixing the rebars in the through holes for installing the reinforcing bars of these anchor plates with part of them exposed, the exposed reinforcing bars of the adjacent anchor plates remain separated. Then, the method for constructing an anchor support beam is characterized in that a solidified material is supplied around the exposed reinforcing bars and between the exposed reinforcing bars to construct a reinforced concrete structure for use as a support beam for an anchor body. Further, it is a method for constructing the anchor support beam, wherein an anchor plate having a raised bottom is used. Furthermore, it is a method of constructing the above anchor support beam using an anchor plate in which reinforcing bars are exposed in multiple directions from the side surface.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. <A> Structure of Anchor Plate (FIG. 3) The anchor plate 1 is a concrete block body. A cross shape as shown in FIG. 3, a cube shape, a flat plate shape,
A disk shape, a polygonal column shape, etc. can also be adopted. An anchor hole 11 for penetrating the anchor body 2 is formed in the central portion of the anchor plate 1 in the vertical direction. In addition, in the anchor plate 1, the amount of rebar required for design is laid, and a part of the reinforced bar is part of the anchor plate 1.
From the side of, a predetermined number (Fig. 3 shows the case of two)
Is exposed for a predetermined length to form the embedded rebar 3. The embedded reinforcing bars 3 are exposed only in the straight upward direction. If the anchor plate 1 has a polygonal columnar shape or the like, since the number of side surfaces of the anchor plate 1 is large, the work of installing the reinforcing bar 4 on the slope may be complicated. Therefore, in such a case, the embedded reinforcing bars 3 may be exposed in multiple directions in advance so as not to interfere with the transportation work. For example, in the case of the cross-shaped anchor plate 1 of FIG. 1, the embedded reinforcing bars 3 are exposed only on the two joint surfaces 12 facing each other around the anchor hole 11 and are not exposed on the other two joint surfaces 13. A predetermined number of through holes 14 of the reinforcing bar 4 in the horizontal direction are penetrated through the other two joint surfaces 13 (FIG. 3 shows a case where two through holes are penetrated). The through hole 14 is formed in a straight line by vertically shifting from the installation position of the embedded reinforcing bar 3, and a part of the reinforcing bar 4 is exposed from the through hole 14. In addition, the bottom surface of the anchor plate 1 is formed in a raised bottom shape,
A case where it is composed of the raised bottom surface 15 and the grounding portion 16 is also conceivable. <B> Installation of anchor plate (Figs. 2 and 4) The installation hole of the anchor body 2 is excavated on the slope, and the anchor body 2 is installed.
Insert and fix the tip to the ground. Next, the above-ground part of the anchor body 2 fixed is penetrated into the anchor hole 11 of the anchor plate 1, and the anchor plate 1 is installed on the slope. At this time, as shown in FIG. 2, when the bottom surface of the anchor plate 1 is formed in a raised bottom shape, the anchor plate 1
Is installed on the ground by line contact by the ground contact portion 16, so that it is less affected by the unevenness of the slope. Next, the free end of the installed anchor body 2 is fixed to the upper surface of the anchor plate 1 by the fixing tool 21, as shown in FIG. Then, the reinforcing bar 4 is inserted in each through hole 14 of the anchor plate 1.
After arranging and exposing both ends, the mortar 5 is filled in the through hole 14. The number of reinforcing bars 4 to be installed is determined in consideration of the case where the embedded reinforcing bars 3 only play an auxiliary role or the case where the legal strength of a certain level or more is to be borne. In addition, if necessary for construction etc., do not penetrate the reinforcing bar 4,
In some cases, only one end is exposed and the bar is arranged. As a result, the reinforcing bar 4 can be embedded in the anchor plate 1 with a part thereof exposed. In the case of the anchor body 2 that requires a tension force, the anchor plate 1 can be used as a support body to be tensioned and fixed by a jack or the like. <C> Structure of Support Beam (FIGS. 1 and 2) As shown in FIG. 2, a plurality of anchor plates 1 are installed in the same manner as above with a predetermined interval on the slope and facing the same direction. , Rebar 4 is attached respectively. Then, as shown in FIG. 4, a solidifying material is supplied along the periphery of the embedded reinforcing bars 3 and the reinforcing bars 4 between the anchor plates 1 to construct the support beams 6. At this time, the embedded rebars 3 and the rebars 4 of the adjacent anchor plates 1 are not connected by connecting rebars,
The solidifying material is supplied in the separated state. That is, the connecting rebars are not arranged between the embedded rebars 3 and between the rebars 4, and are composed only of the solidified material. This is because structural strength is not required so much in the middle portion of the support beam 6, that is, between the embedded rebars 3 and between the rebars 4, and it is not necessary to freeze the connecting rebars. Although FIG. 4 shows the case where the support beams 6 are constructed in a lattice shape, various shapes such as a rhombus, a circle, an ellipse, and a polygon can be considered. Further, the solidification material can be supplied by a spraying method, a normal pouring method, or the like. In the case of the pouring method, a mold is installed around the embedded rebars 3 and 4, and the solidification material is poured.

[0006]

Since the present invention is as described above, the following effects can be obtained. <B> Reinforcing bars exposed from the side of the anchor plate do not need to be connected by connecting rebars, so connection work can be saved,
The construction efficiency can be improved. <B> If a block is installed on a ground surface having irregularities, a positional shift may occur between the ends of the exposed reinforcing bars of the adjacent blocks. In the case where the connection is made by the connecting rebar as in the conventional case, the connection work becomes difficult due to the positional deviation, and therefore it is necessary to install the block at an accurate position. However, since the present invention does not require a connecting work between exposed reinforcing bars, it does not pose a problem even if some positional deviation occurs. Therefore, the construction can be easily performed. <C> It is economical because connection reinforcing bars are not required.

[Brief description of drawings]

FIG. 1 is an explanatory view of a state in which a solidifying material is supplied between anchor plates.

FIG. 2 is an explanatory view of a state where the anchor plate is installed on the slope.

FIG. 3 is an explanatory view of an anchor plate.

FIG. 4 is an explanatory diagram of a raised bottom surface of the anchor plate.

Claims (3)

[Claims] 1. An anchor plate which is a concrete block-shaped anchor plate in which a reinforcing bar is exposed from a side surface and a through hole for installing a reinforcing bar is penetrated to another side surface, and the anchor plate is on a slope. After fixing the rebars in the through holes for installing the rebars of these anchor plates with part of them exposed, leave the exposed rebars of the adjacent anchor plates separated from each other. The method for constructing an anchor support beam is characterized in that a solidified material is supplied around and between exposed rebars to construct a reinforced concrete structure, which is used as a support beam for an anchor body. 2. The method for constructing an anchor support beam according to claim 1, wherein an anchor plate having a raised bottom surface is used. 3. The method for constructing an anchor support beam according to claim 1, wherein an anchor plate having reinforcing bars exposed in multiple directions from a side surface is used.